Electric motor.



PATENTED AUG. 4, 1903.-

T. A. sBlgrz. ELEGTRIG MOTOR. lAPPLICATION FILED HAR. 23, 1903;-,

N0 MODEL.

mi' wams Ps1-:nf q mouw-wo.,WASHINGTON, o. a

UNITED STATES Patented'August 4, 19.

PATENT OFFICE.

HfELEc'zi-Rlc MOTOR.

SPECIFICATION forming part of Letters Patent No. 735,160, dated August 4,1903.

Y Application filed March 23, 1903. Serial No. 149,174. (No model.)

Be it known that I, THEODOREA. Snrrz, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Electric Motors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in electric motors, and more particularly to such motors adapted for carving-machines and analogous devices; andits object is to provide a compact and eiective electric motor, to provide the same with means for both angular and longitudinal adjustment of the spindle, to provide means whereby the spindle may be readily removed and replaced without disturbing the balance of the machine, and to provide the device with certain new and useful features, hereinafter more fully described, and particularly pointed out in the claims.

My invention consists, essentially, of an electric motor mounted on a suitable support and provided with a universal-jointadjustment, whereby its axis may be adjusted angularly in any desired direction and having its armature mounted on a sleeve provided with a clamp for holding the spindle, a case surrounding the armature and having inwardly-proj ectin g field-magnets and bearings at each end for the spindle, and a spindle longitudinally adjustablein the sleeve, and

means for clamping the spindle in place with in the sleeve, consisting of a longitudinal slot in the sleeve and a band and set-screwgsurrounding the slotted portion of the sleeve, and in the combination and arrangement of parts, as will more fully appear by reference to the accompanying drawings, in which- Figure l is an enlarged vertical section of the motor, taken on the line l l of Fig. 3; Fig. 2, a rear elevation of the device; Fig. 3,

a plan view of the same; Fig. 4, an enlargedV detail of the brushes; Fig. 5, a detail of the clamping means for holding the spindle; Fig. 6, adetail of the means for clamping the stem of the universal joint, and Fig. 7 a detail in transverse section of one of the brush-holders.

Like letters refer to like parts in all of the figures.

A represents any suitable column or stand ard, slotted vertically at one side and provided With lugs A' opposite the slot and a binding screw A", extending-through the lugs.

B is a ball-socket to receive the ball C on the case C and divided horizontally and provided with clamping-screws B' anda downwardly-projecting stem B, rotative in the post A and clamped therein by means of the screw A. Y Y

C is a cylindrical case for the motor, provided with a rearwardly-projecting rball C",

inserted in the socket B and movable in all directions therein, whereby the axis of the case is universally adjustable. Said case is also provided with inwardly-projecting fieldmagnets G, provided with pole-pieces or shoes P, detachably secured thereto, and fieldL coils P. d

D represents removable heads to the case having axial bosses D, in which bosses are inserted journal-bearings D for the spindle F. Surrounding the spindle is a sleeve G, provided with bearings Gat each end,-where by the sleeve is retained in the axis of the case when the spindle is removed. This sleeve is also split longitudinally at G" and surrounded by a clamping-band H, provided with a binding-screw H', whereby the spindle is adj ustably secured within the sleeve. In the head D opposite the band H is a removable plug I, whereby a socket-wrench may be inserted to operatethe screw H to adjust or remove the spindle. Fixed on the sleeve G is the Varmature F, by which the sleeve and spindle are rotated. d

J is the commutator, also mounted on the sleeve G.

K represents the brushes, consisting of rec tangular pieces of suitable material longitudinally movable in casings L and' heldin contact with the commutator by springs N. Said casin gs are provided with suitable caps M, in which caps the line-Wires O, comprising the electric circuit, are secured. The casings L are also suitably mounted in insulated openings in the head D and secured in place by set-screws L.

The bearings Dl are provided with capillary lubricators E, which lubricators are inserted in openings in the under side of said IOO B and A the rnotor will be rigidly held in whatever position it may be adjusted. By slacking the screw H the spindle F is released and may be wholly withdrawn or can be longitudinally adjusted in the sleeve, as occasion requires, and at the same time the bearings of the sleeveG will retain the same in the axis of the case. The end of the spindle, having any suitable tool attached, can thus be adjusted at greater or less distance from the motor and can also be adjusted at any angle or position whatever, as occasion may require. By detaching one of the heads D the sleeve and the parts supported thereon are readily `removed for inspection or repairs.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

l. In a motor, longitudinally-adj ust-able and removable spindle, bearings for the spindle, a sleeve between the said bearings and surrounding` the spindle, an armature and commutator mounted on the sleeve, and a clamp to adjustably and detachably hold the spindle in the sleeve.

' 2. In a motor, the combination of a sleeve, bearings for the sleeve, an armature mounted on the Sleeve, a spindle longitudinally adjustable in the sieeve and also detachable therefrom, anda clamp to hold the spindle in the sleeve.

3. In a motor, the combination of a case having inwardly-projecting field-magnets on its interior, a detachable head to the case, a longitudinally adjustable and removable spindle in the axis of the case, bearings for the spindle in the heads of the case, a sleeve in the axis of the case and journaled in the inner ends of the spindle-bearings, an armature and commutator mounted on the sleeve, and brushes inserted in one head of the case and engaging the commutator.

4. The combination of a case, inwardlyprojecting field-magnets on the case, a detachable head on the case, a spindle in the axis of the case, bearings for the spindle in the heads of the case, a sleeve between the bearings and surrounding the spindle, and also having a longitudinal slot, a clampingband surrounding the sleeve and provided with a screw, a removable plug in the case opposite the band, and an armature and commutator mounted on the sleeve.

5. The combination of an electric motor, having a longitudinally-adjustable spindle, a case te the motor, a column to support the case, and a universal joint connecting the case and column, whereby the axis of the spindle is angularly adjustable in all directions.y

6. The combination of a motor having a longitudinally-adjustable spindle, a column provided with a longitudinal slot and a clamp-` ing-screw, a socket having a downwardlyprojecting stem rotative in the'a column and held by the screw and a case to the motor having a project-ion rotative in the socket.

7. The combination of a hollow column having a vertical slot in one side and lugs and clamping screw opposite the slot, a ballsocket divided horizontally and provided with clamping-screws, a stem on the socket and rotative on a vertical axis in the column, and a motor having a ball inserted in the socket and adjustable therein, whereby the axis of the motcr is angular-ly adjustable in every direction at pleasure.

S. The combination of a column, a motorcase connected to the column bya universal joint and supported thereby, a sleeve in the axis of the case, and having the armature and commutator of the motor mounted thereon,

a detachable and adjustable spindle in the sleeve, and a clamp to hold the spindle.

9. In a motor, the combination of a case, detachable heads to the case, bearings in the axis of the heads, a spindle journaled in the bearings, a sleeve also journaled in the inner ends of the bearings, a clamp on the sleeve tok IOO 

